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Saskatchewan's Chelsea Valois, right, pictured here with Kaillie Humphries. The pair had one of the most successful partnerships in the history of bobsleigh. Humphries, who is one of the favourites, is competing with another brakeman at Sochi. (Christof Koepsel/Getty Images)

For two seasons, Valois was the brakeman for Kaillie Humphries. The pair dominated the World Cup bobsleigh circuit. They won back-to-back titles, and set a record by winning eight consecutive international events.